25. Zone protection. overcurrent protection
b. protected additionally RCD
d. The Electricity Work Regulations state that:
a. RCD protection
c. only instructed and skilled people may work ‘live’.
22. The socket outlet must be:
a.
27. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V system.
.
20. All final circuits bathroom, both power and lighting, must have:
a. only competent people may work ‘live’
d. earth fault loop impedance
c. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V cable sheath supply. everyone may work ‘live’
b. State the advantages conduit trunking and tray cable enclosure
system for commercial installation such shopping centre. functional test
d. buried depth 600mm.365
U W
6 6
2 2
C1
L1 C1
2
C3
4
5
6
To phase supply
To phase motor
19. Use sketch with notes explanation show how mini-trunking and
skirting trunking could used contain all the electrical supplies a
school’s computing classroom.
23. Every caravan pitch must have least one 16A socket outlet for
connection caravan. the industrial type
b. one may work ‘live’
c.
24.
26. Identify from the list below the test which used verify that all fuses,
circuit breakers and switches are connected the line conductor:
a. Compare PVC/SWA cables with cables and give their advantages,
disadvantages and typical applications. continuity test
b. protected from overcurrent
c. IPX7 protection
d. polarity test.
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